JPS5846435B2 - man conveyor steps - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the steps of a passenger conveyor, such as an escalator or a motorized road.

The field of use for passenger conveyors has expanded from commercial buildings to public facilities, and they have become established as essential service equipment within buildings.

Particularly recently, as part of the urban transportation network, they have begun to be installed in densely populated areas such as subway stations and elevated stations, forcing them to operate in harsher environments than ever before.

In addition, escalators have begun to be put into practical use on pedestrian bridges, which can be called a revolution in services for pedestrians.Recent trends in the spread of escalators are gradually oriented toward outdoor installations.

For this reason, compared to the environment in which it is used in department stores, etc., where it has been widely used in the past, it is necessary to take into consideration the lifespan, such as corrosion resistance assuming underground water, and wear resistance in response to an increase in the number of customers. New needs that have never existed before are beginning to emerge, and it is expected that a passenger conveyor that can meet these needs will emerge.

Here, as shown in FIG. 1, the conventional passenger conveyor includes a step 1 arranged in an endless manner to carry passengers, a rotating body such as a band rail 2 that rotates synchronously with this step 1, It is composed of stationary bodies such as a parapet 3 and an exterior board 4, all of which are supported by a sturdy body frame 5.

As shown in Fig. 2, the step 1, which is the main member for passenger transportation, is composed of a cleat part la, which is stepped on by the passenger, a riser part 1b, which closes the step, and a frame part 10, which is a bone member. The structure is such that the transition occurs when the provided roller 1d rolls.

Furthermore, the details of the +J-toia have a width W of about 1 meter, and are placed over the entire length of the passenger conveyor, and its cross section is as shown in Figure 3. has become the most common.

That is, its front surface is formed of a large number of uneven surfaces having a top part 1e and a bottom part 1f, and reinforcing parts 1g as shown in FIG. 4 are usually arranged in a lattice shape on the back surface. It is.

In this way, the upper surface of the step 1 is formed with a large number of uneven patterns and the thick reinforcing part 1g, so it is quite sturdy and is designed to allow passengers to use it with peace of mind.

On the other hand, the riser portion 1b has the same width as the cleat portion 1a, and serves as a riser plate for closing the difference in level of each step 1.

In terms of appearance, it is shaped into a curved surface so as not to interfere with the vertical movement of the step 1 itself and the rotation of the belt.
In addition, the cleat portion 1a usually has an uneven surface so that the front edge of the cleat portion 1a can be bitten into the cleat portion 1a.

The cleat part 1a and the riser part 1b mentioned above are usually manufactured by the die-cast Iff type method using aluminum alloy, and are made with considerable precision for the purpose of preventing personal accidents around the step 1 itself. It is something that can be completed.

In the conventional step configuration as described above, corrosion resistance,
Problems have been pointed out in terms of wear resistance and economic efficiency, and improvements are desired.

The corrosion resistance of passenger conveyors has been discussed in terms of corrosion caused by underground water when installed in subway stations, and corrosion caused by adhesion of concrete at general construction sites, and various countermeasures have been taken.

However, the aluminum alloy (hereinafter abbreviated as aluminum), which is the main material of Step Group 1, is said to have poor corrosion resistance, and is particularly susceptible to concrete (alkaline), and its adhesion causes unsightly black spot corrosion after about 10 days. I end up.

By the way, in the literature of the Japan Institute of Metals (published in 1960, Corrosion Resistant Alloys), the alkali resistance data is as follows:
It is said to be 25,000 times more corrosive than stainless steel and iron.

This result is extremely serious because the area around the passenger conveyor is covered with strong alkaline concrete, and the effects of this are unavoidable, and the reality is that the majority of passenger conveyors are corroded to some extent.

On the other hand, wear resistance is particularly important in selecting the material for the cleat portion 1a since passengers ride on the cleat portion 1a of Step 1 and are constantly affected by contact objects.

Generally, the wear resistance of aluminum is said to be about 1/10 that of stainless steel or iron, and this value is a commonly accepted opinion among professional engineers.

Furthermore, the economic reality cannot be ignored, as the electricity situation for aluminum smelting has recently become seriously deteriorating, and costs continue to rise at a snail's pace.

As mentioned above, the aluminum that makes up the conventional step 1 is
There remains room for reexamination in terms of corrosion resistance, wear resistance, and economic efficiency.

Therefore, the present inventors have recently proposed a step made of stainless steel.

The structure of this stainless steel step is shown in Figures 5 to 1.
It looks like Figure 0.

The main difference from the conventional one is the cleat part 6a and the riser part 6.
It is in the configuration of b.

That is, if the cleat portion 6b is explained as a representative example,
This cleat portion 6a is made of a thin plate of stainless steel with a thickness of approximately 0.5 to 2 mm, and is formed into a corrugated body as shown in FIGS. 5 and 6.

In this case, the cleat portion 6a has a top portion 6e1 and a groove portion 6f formed into a gray-faced shape by press molding, and a thick plate (in practice, a joining means such as screws may be used) spot-welded using electrodes X and Y ( A reinforcing body 7 having a thickness (t=10 to 50 mm) is disposed on the entire back surface of the cleat portion 6a.

On the other hand, the riser portion 6b is also shaped and joined in substantially the same manner as the cleat portion 6a, but a curved reinforcing body 8 is disposed in this portion.

The cleat part 6a and riser part 6b, which are integrally joined to the respective reinforcing bodies 7 and 8, are connected to the frame parts 9 on both sides, which are the main frames of the step.
It is fixedly installed using screws 10b and 10c.

Note that the cleat portion 6a is formed from a thin plate as described above.
As a matter of course, there is an opening K shown in FIG. 6 in the riser part 6b, but the means for closing this part is as follows.
This is dealt with by arranging IJ-Nl and 12 at the end.

In this case, the end cleat 12 is as shown in FIG.
It is configured to close both the openings of the cleat portion 6a and the riser portion 6b.

Here, the following problems remain in the step of achieving the above configuration.

(1) Since the upper surface of the cleat portion 6a receives a load (200 to 300 kg) from passengers jumping on or jumping off, the reinforcing body 7 needs to be particularly thick and strong.

(2) Furthermore, if this deflection deformation becomes large and an abnormal load is applied, permanent deformation may occur as shown by the imaginary line in FIG.

(3) In particular, the cleat portion 6a has a bellows-like shape in its width direction and has extremely low deflection rigidity in the width direction, so appropriate reinforcement is essential.

(On the other hand, it is extremely strong in the direction of step progression) The thickening of the reinforcing body 7 described here as a result of increasing its strength not only causes inconvenience in handling due to maintenance work, but also causes high costs.

In addition, the deformation phenomenon shown in Figure 8 prevents precise engagement with the comb plate (not shown) at the entrance of the passenger conveyor, and poses safety problems such as injury to the toes. ing.

From the above, the steps need to be lightweight and have sufficient strength.

The present invention has been made in view of this point, and its purpose is to
To provide a step for a passenger conveyor that is lightweight, maintains sufficient strength, and has excellent maintainability and safety.

In order to achieve this object distantly, the present invention provides a structure in which a cleat part made of a pressed wave-formed thin stainless steel plate and a frame part extend in a direction substantially perpendicular to the direction of the groove in the cleat part, and have a predetermined interval between the cleat part and the frame part. IJ −
The present invention is characterized in that a plurality of pitch retaining members are provided fixed to the bottom of the groove of the groove, and the frame parts on both sides are connected by reinforcing members separately at the front and rear parts.

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

In FIGS. 11 to 13, the cleat portion 6a1
The arrangement of the riser portion 6b and the end cleats 11.12 is the same as in the conventional example, but in this embodiment, the cleat portion 6b
A plurality of frame-shaped reinforcing bodies 13 with a cross section of 1-shaped and extending in a direction perpendicular to the direction of step progression are arranged at the bottom of a, and furthermore, a reinforcing body 14 with a rectangular cross-section is provided at the front part, and a reinforcing body 14 with a rectangular cross section is provided at the front part, and a reinforcing body 14 with a rectangular cross section is provided at the front part. is characterized in that a reinforcing body (corresponding to the conventional reinforcing body 8) 15 is provided for the riser 6b.

Here, all the reinforcing bodies 13, 14 and 15 are fixed to both frame parts 16 (corresponding to the conventional frame part 9) of the main frame near both ends thereof by poles N7a, 17b and 17C.

The reinforcing body 15 is bent along the curvature of the riser part 6b as in the conventional case, and is fixed to the frame part 16 with screws 17d at the lower end, and a flat part 15a resting on the frame part 16 near the upper end. This is a mechanism to support the rear reinforcing body 13.

Further, the flat portion 15a is fixed to the frame portion 16 with bolts 17b.

On the other hand, the reinforcing body 14 in the front part of the step is provided with a polyurethane resin on the front end surface of both frame parts 16 so as to connect the left and right frame parts 16.
7c, and the front reinforcing body 13 is supported by this upper surface portion 14a.

The cleat portion 6a and the reinforcing body 13 are formed by spot welding the bottom of the groove of the cleat portion 6a and the top of the reinforcing body 13 at a plurality of positions at predetermined intervals in the longitudinal direction of the reinforcing body 13. The waveforms 6a are firmly joined while maintaining the pitch of each wave accurately, and the riser portion 6b and the reinforcing body 15 are also joined in the same manner.

With this configuration, the front and rear of the step are
Since it is supported by the reinforcing bodies 14 and 15, the reinforcing body 13, which is the original reinforcing material of the cleat part 63, does not require much rigidity.Moreover, since the reinforcing body 13 has the vertical ribs 13a, it has a considerable stiffness. It also has the advantage of increased rigidity.

Note that the reinforcing bodies 14 and 15 reduce the load applied to the cleat portion 6a in the width direction by Pl and P2 shown in FIG.
It is something that is shared and backed up like this.

Therefore, it is possible to reduce the weight of Stella 7° while maintaining sufficient strength, and improve performance in terms of handling and safety.

Generally, the cleat part 6a is damaged by an abnormal external force from a passenger (such as accidentally inserting a Western umbrella into the groove), and has to be replaced. Even when replacing the lower frame part 16, the front and rear reinforcements 14 and 15 form an integral framework as shown in Fig. 13, so
It is relatively easy to work with.

That is, in the conventional step, when the cleat part 6b is removed, the lower frame part 16 becomes loose and difficult to work on, so after temporarily fixing it with a worker, etc., the cleat part 6a must be removed and replaced. However, in the steps of this embodiment, the cleat portion 6a only needs to be removed and attached to the lower framework, making the replacement work extremely easy.

Therefore, the burden of maintenance work is significantly reduced.

Note that the shape of each reinforcing body is not limited to those shown in the above embodiments, and can be arbitrarily selected.Furthermore, when the riser part is manufactured by an aluminum alloy die-casting method, the rear reinforcing body may be used as the riser part. It can also be formed integrally.

As described above, according to the present invention, it is possible to reduce the weight of the step while maintaining sufficient strength, and improve the handleability and safety.

In addition, the cleat portion can be replaced easily, and the maintainability of the step can be improved.

[Brief explanation of the drawing]

Figure 1 is a side view of the upper part of the passenger conveyor, Figure 2 is a perspective view of a conventional step, Figure 3 is a sectional view taken along line 1-1 in Figure 2, and Figure 4 is an oblique view of Figure 3. Back view seen from below,
Figures 5 to 10 are diagrams related to recently proposed stainless steel steps, and Figure 5 is a sectional view equivalent to Figure 3, and Figure 6 is a cross-sectional view equivalent to Figure 3.
The figure is a back view equivalent to Figure 4, Figure 7 is a perspective view equivalent to Figure 2, Figure 8 is a front view along the line ■-■ of Figure 7, and Figure 9 is the TV-TV of Figure 8. 10 is a sectional view taken along the line ■-■ in FIG. 7, and FIGS. 11 to 13 are diagrams related to steps according to an embodiment of the present invention, and FIG. 11 is a cross-sectional view taken along the line ■-■ in FIG. 12 is a back view corresponding to FIG. 6, and FIG. 13 is a perspective view of a framework consisting of a frame portion and a riser portion. 6a... Cleat part, 6b... Riser part, 13... Reinforcement body (pitch holding member), 14
...Front reinforcing body, 15... Rear reinforcing body, 15a... Plane part, 16... Frame part.

Claims (1)

[Scope of Claims] 1. The step includes at least a cleat section on which a passenger rides, a frame section that supports both sides of the cleat section, and a riser section that closes the rear surface, and the cleat section is arranged in a plurality of sections along the direction of movement of the step. In the step of the man conveyor, which is made of a pressed corrugated molded body of thin stainless steel plate having grooves, a predetermined groove extending in a direction substantially perpendicular to the direction of the grooves of the cleat portion is provided between the cleat portion and the frame portion. A plurality of pitch retaining members are provided fixed to the bottom of the groove of the cleat portion at a plurality of positions spaced apart from each other, and the frame portions on both sides are connected by reinforcing members separately at the front and rear portions. The steps of the man conveyor. 2. In claim 1, the pitch retaining member is a member having a "1" cross section, the top part of which is welded to the bottom of the groove of the cleat part, and the base part thereof fixed to the frame part. and the steps of the man conveyor. 3. In claim 1, the front reinforcing member is made of a member having at least a vertical portion having a ■-shaped cross section;
A step for a passenger conveyor, characterized in that both ends of this member are in contact with and fixed to the front end surfaces of both the frame parts, respectively. 4. In claim 1, the front reinforcing member is composed of a member having at least a vertical portion and a horizontal portion with an inverted cross section, and both ends of the vertical portion are in contact with the front end surfaces of the frame portions. A step of a passenger conveyor, characterized in that the pitch retaining member is placed on the horizontal part of the step. 5. The step of the passenger conveyor according to claim 1, characterized in that the riser part is supported by a part of the rear reinforcing member. 6. The step of a passenger conveyor according to claim 1, wherein the rear reinforcing member is integrally formed with the riser portion. 7 In claim 1, the rear reinforcing member includes a curved surface portion bent along the curvature of the riser portion and a flat portion bent from the upper end of the curved surface portion and extending horizontally; bonding to the riser portion and fixing the lower ends of the curved portions to the lower rear end surfaces of both the frame portions;
Furthermore, the step of the passenger conveyor is characterized in that the flat part is fixed to the rear part of the upper surface of both frame parts, and the pitch holding member is placed on the flat part.